PDF_Office/PDF Office/PDF Master/Class/ToolsLibrary/NSView/KMSplitView.m

//
//  KMSplitView.m
//  SignFlow
//
//  Created by wanjun on 2021/5/26.
//

#import "KMSplitView.h"
#import <QuartzCore/QuartzCore.h>

NSString *CPDFOfficeSplitViewAnimationDidEndNotification = @"CPDFOfficeSplitViewAnimationDidEndNotification";
NSString *CPDFOfficeDisableAnimationsKey = @"CPDFOfficeDisableAnimationsKey";

@implementation KMSplitView

@synthesize animating;

+ (id)defaultAnimationForKey:(NSString *)key {
    if ([key isEqualToString:@"firstSplitPosition"] || [key isEqualToString:@"secondSplitPosition"])
        return [CABasicAnimation animation];
    else
        return [super defaultAnimationForKey:key];
}

- (NSColor*)dividerColor {
    return [NSColor whiteColor];
}

- (CGFloat)firstSplitPosition {
    NSView *view = [[self subviews] objectAtIndex:0];
    if ([self isSubviewCollapsed:view])
        return [self minPossiblePositionOfDividerAtIndex:0];
    else if ([self isVertical])
        return NSMaxX([view frame]);
    else
        return NSMaxY([view frame]);
}

- (void)setFirstSplitPosition:(CGFloat)position {
    [self setPosition:position ofDividerAtIndex:0];
}

- (CGFloat)secondSplitPosition {
    NSView *view = [[self subviews] objectAtIndex:1];
    if ([self isSubviewCollapsed:view])
        return [self minPossiblePositionOfDividerAtIndex:1];
    else if ([self isVertical])
        return NSMaxX([view frame]);
    else
        return NSMaxY([view frame]);
}

- (void)setSecondSplitPosition:(CGFloat)position {
    [self setPosition:position ofDividerAtIndex:1];
}

- (void)setPosition:(CGFloat)position ofDividerAtIndex:(NSInteger)dividerIndex animate:(BOOL)animate {
    if ([[NSUserDefaults standardUserDefaults] boolForKey:CPDFOfficeDisableAnimationsKey] || dividerIndex > 1)
        animate = NO;
    
    if (animating) {
        // do nothing
    } else if (animate == NO) {
        [self setPosition:position ofDividerAtIndex:dividerIndex];
    } else {
        animating = YES;
        [NSAnimationContext runAnimationGroup:^(NSAnimationContext *context){
                if (dividerIndex == 0)
                    [[self animator] setFirstSplitPosition:position];
                else if (dividerIndex == 1)
                    [[self animator] setSecondSplitPosition:position];
                else
                    [self setPosition:position ofDividerAtIndex:dividerIndex];
            }
            completionHandler:^{
                animating = NO;
                [[NSNotificationCenter defaultCenter] postNotificationName:CPDFOfficeSplitViewAnimationDidEndNotification object:self];
        }];
    }
}

@end